PDF Describing Weather - Moore Public Schools

[Pages:4]Name

Date

Class

Content Vocabulary

LESSON 1

Describing Weather

Directions: Write the correct term in the boxes to the right of each definition. Then unscramble the letters in the shaded boxes to spell a ninth term.

air pressure relative humidity

dew point variable

humidity water cycle

kinetic energy weather

precipitation

1. series of processes through which water moves around the globe

2. the amount of water vapor in the air compared to the maximum possible amount of water vapor the air can contain at that temperature

3. energy an object has because of its motion

4. atmospheric conditions at a certain place and time

5. a quantity that can be changed

6. a force exerted by a column of air

7. the amount of water vapor in the air

8. boundary at which water vapor becomes liquid water

9. When they are unscrambled, the letters from the shaded boxes spell , which includes rain, snow, and sleet.

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Weather

9

Name

Date

Class

Lesson Outline

LESSON 1

Describing Weather

A. What is weather?

1. The atmospheric conditions, along with short-term changes, make up the

of a certain place at a certain time.

B. Weather Variables

1. Scientists who study and predict weather are

.

2. Air

is the measure of the average kinetic energy of

molecules in the air. Molecules in warm air move molecules in cooler air.

than

3. surface below it.

is the pressure that a column of air exerts on the air or

a. Air pressure decreases as altitude

.

b. A(n)

is an instrument used to measure air pressure.

4.

is caused by air moving from an area of high pressure

to an area of low pressure.

a. In a south wind, the wind is coming from the

.

b. The instrument used to measure wind speed is a(n)

.

5. The amount of water vapor in the air is

.

a. When air is

, it holds the maximum amount of water

vapor possible at that

.

b.

is the amount of water vapor in the air compared to

the maximum amount of water vapor the air can hold at that temperature.

c. Relative humidity is reported as a(n)

.

6. When air near the ground becomes saturated, the water vapor condenses into a

liquid and forms

.

a. If the temperature is below 0?C, ice crystals, referred to as

, form.

b. The temperature at which air becomes fully saturated because the temperature decreases while the amount of moisture stays constant is

the

.

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

10

Weather

Name

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Lesson Outline continued

7. As warm air rises in the atmosphere, it

.

a. When the air cools enough that the droplets of water form.

is reached, small

b. atmosphere.

are water droplets or ice crystals suspended in the

c.

is a cloud that forms near Earth's surface.

d.

clouds are flat, white, and layered.

e. altitude.

clouds are fluffy and are present at 2,000 to 6,000 m

f. altitude.

clouds are wispy and are present above 6,000 m

8. atmosphere.

is water, in liquid or solid form, that falls from the

a. Precipitation that falls as liquid water is

.

b. Precipitation that is solid crystals of ice is

.

c. Precipitation that starts as snow and then melts and freezes again is

called

.

d.

is precipitation formed when ice pellets rise and fall

within a cloud, adding new layers of ice during each cycle.

9. The

is the series of natural processes in which water

continually moves among oceans, land, and the atmosphere.

a. Water enters the atmosphere as water vapor when liquid water on Earth's

surface

.

b. As water vapor cools, it

, forming liquid water.

c. Clouds produce water falls to Earth's surface.

, which is when liquid or frozen

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Weather

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Name

Content Practice A

Describing Weather

Rain

Snow

Cloud droplets Warm Raindrops

Warm

Ice

Cloud

crystals droplets

Cold

Snowflakes

Cold

Date

Class

LESSON 1

Sleet

Ice

Cloud

crystals droplets

Warm Raindrops

Cold

Hail

Cloud droplet

Ice crystal

Hail Warm

Directions: Use the diagram to answer each question.

Question

Rain

Snow

Sleet

Hail

What form is the water in when it is in the clouds-- liquid or solid?

What is the air temperature near the clouds--warm or cold?

What is the air temperature near Earth's surface--warm or cold?

What is the form of precipitation that falls-- liquid or solid?

How are rain, snow, sleet, and hail part of the water cycle?

What role does temperature play in the type of precipitation that develops?

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Weather

13

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